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#
Name
1835F
Good Graph
bitmasks
,
dfs and similar
,
graph matchings
,
graphs
,
implementation
3500
x144
1707F
Bugaboo
bitmasks
,
constructive algorithms
,
dp
,
number theory
3500
x144
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x214
1515H
Phoenix and Bits
bitmasks
,
brute force
,
data structures
,
sortings
3500
x215
1450G
Communism
bitmasks
,
dp
,
trees
3500
x233
1336E2
Chiori and Doll Picking (hard version)
bitmasks
,
brute force
,
combinatorics
,
math
3500
x289
1292F
Nora's Toy Boxes
bitmasks
,
combinatorics
,
dp
3500
x304
1305G
Kuroni and Antihype
bitmasks
,
brute force
,
dp
,
dsu
,
graphs
3500
x946
1097H
Mateusz and an Infinite Sequence
bitmasks
,
brute force
,
dp
,
strings
3400
x93
865F
Egg Roulette
bitmasks
,
brute force
,
divide and conquer
,
math
,
meet-in-the-middle
3300
x67
865E
Hex Dyslexia
bitmasks
,
brute force
,
dp
,
graphs
3300
x119
1804H
Code Lock
bitmasks
,
dp
3300
x169
1556G
Gates to Another World
bitmasks
,
data structures
,
dsu
,
two pointers
3300
x309
718E
Matvey's Birthday
bitmasks
,
graphs
3300
x343
1523F
Favorite Game
bitmasks
,
dp
3300
x400
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x147
1799H
Tree Cutting
bitmasks
,
dfs and similar
,
dp
3200
x271
1214G
Feeling Good
bitmasks
,
data structures
3200
x281
1519F
Chests and Keys
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
3200
x388
750G
New Year and Binary Tree Paths
bitmasks
,
brute force
,
combinatorics
,
dp
3200
x441
1326F2
Wise Men (Hard Version)
bitmasks
,
dp
,
math
3200
x470
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x601
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x601
1261F
Xor-Set
bitmasks
,
divide and conquer
,
math
3100
x370
1103D
Professional layer
bitmasks
,
dp
3100
x400
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x419
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x523
1463F
Max Correct Set
bitmasks
,
dp
,
math
3100
x552
1383C
String Transformation 2
bitmasks
,
dp
,
graphs
,
trees
3100
x561
1770F
Koxia and Sequence
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
3100
x618
1948G
MST with Matching
bitmasks
,
brute force
,
dsu
,
graph matchings
,
trees
3100
x619
1423I
Lookup Tables
bitmasks
3000
x102
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x245
1748F
Circular Xor Reversal
bitmasks
,
constructive algorithms
3000
x323
1299D
Around the World
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
graphs
,
graphs
,
math
,
trees
3000
x419
1552G
A Serious Referee
bitmasks
,
brute force
,
dfs and similar
,
sortings
3000
x454
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x475
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x563
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x597
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x645
232E
Quick Tortoise
bitmasks
,
divide and conquer
,
dp
3000
x675
1342F
Make It Ascending
bitmasks
,
brute force
,
dp
3000
x688
1616H
Keep XOR Low
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
,
dp
,
math
3000
x795
914F
Substrings in a String
bitmasks
,
brute force
,
data structures
,
string suffix structures
,
strings
3000
x1451
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x118
217D
Bitonix' Patrol
bitmasks
,
brute force
,
combinatorics
,
dfs and similar
,
math
2900
x245
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x301
776G
Sherlock and the Encrypted Data
bitmasks
,
combinatorics
,
dp
2900
x330
1334G
Substring Search
bitmasks
,
brute force
,
fft
2900
x353
1392G
Omkar and Pies
bitmasks
,
dfs and similar
,
dp
,
math
,
shortest paths
2900
x442
1713F
Lost Array
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
math
2900
x510
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x520
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x574
878D
Magic Breeding
bitmasks
2900
x640
1553H
XOR and Distance
bitmasks
,
divide and conquer
,
trees
2900
x674
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x861
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x968
796F
Sequence Recovery
bitmasks
,
data structures
,
greedy
2800
x169
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x321
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x364
850E
Random Elections
bitmasks
,
brute force
,
divide and conquer
,
fft
,
math
2800
x380
472G
Design Tutorial: Increase the Constraints
bitmasks
,
data structures
,
fft
2800
x393
1327G
Letters and Question Marks
bitmasks
,
dp
,
string suffix structures
2800
x407
1386C
Joker
*special problem
,
bitmasks
,
data structures
,
divide and conquer
,
dsu
2800
x430
83E
Two Subsequences
bitmasks
,
dp
2800
x454
685E
Travelling Through the Snow Queen's Kingdom
bitmasks
,
brute force
,
divide and conquer
,
graphs
2800
x503
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x517
1322D
Reality Show
bitmasks
,
dp
2800
x699
633G
Yash And Trees
bitmasks
,
data structures
,
dfs and similar
,
math
,
number theory
2800
x722
1365G
Secure Password
bitmasks
,
combinatorics
,
constructive algorithms
,
interactive
,
math
2800
x918
79D
Password
bitmasks
,
dp
,
shortest paths
2800
x946
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1054
336E
Vasily the Bear and Painting Square
bitmasks
,
combinatorics
,
dp
,
implementation
2700
x109
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x211
97D
Robot in Basement
bitmasks
,
brute force
,
implementation
2700
x239
1016G
Appropriate Team
bitmasks
,
math
,
number theory
2700
x257
76C
Mutation
bitmasks
,
dp
,
math
2700
x270
504D
Misha and XOR
bitmasks
2700
x298
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x361
1543E
The Final Pursuit
bitmasks
,
constructive algorithms
,
divide and conquer
,
graphs
,
greedy
,
math
2700
x394
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x412
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x424
251D
Two Sets
bitmasks
,
math
2700
x442
938F
Erasing Substrings
bitmasks
,
dp
,
greedy
2700
x469
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x521
772D
Varying Kibibits
bitmasks
,
dp
2700
x572
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x580
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x616
1336E1
Chiori and Doll Picking (easy version)
bitmasks
,
brute force
,
combinatorics
,
math
2700
x650
1795G
Removal Sequences
bitmasks
,
dfs and similar
,
graphs
2700
x654
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x657
1511G
Chips on a Board
bitmasks
,
brute force
,
data structures
,
dp
,
games
,
two pointers
2700
x701
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x751
356D
Bags and Coins
bitmasks
,
constructive algorithms
,
dp
,
greedy
2700
x936
1148F
Foo Fighters
bitmasks
,
constructive algorithms
2700
x971
1641D
Two Arrays
bitmasks
,
brute force
,
combinatorics
,
greedy
,
hashing
,
math
,
two pointers
2700
x1050
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x1114
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1317
1599J
Bob's Beautiful Array
bitmasks
,
brute force
,
greedy
2600
x284
1027G
X-mouse in the Campus
bitmasks
,
math
,
number theory
2600
x297
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23:47:49
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bitmasks
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*combine tags by OR
2-sat
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bitmasks
brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
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number theory
probabilities
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